LE30CD-TR

Overview

The LE30CD-TR is a very low-dropout (LDO) voltage regulator with an inhibit function, manufactured by STMicroelectronics. It provides a fixed positive output voltage of 3 V with a maximum output current of 100 mA. The device operates within an input voltage range of 3.7 V to 18 V and features a typical dropout voltage of 200 mV. Quiescent current is specified at 50 µA in OFF mode and 0.5 mA in ON mode under no-load conditions. It offers high supply voltage rejection of 80 dB (typical) and maintains stability with a small 2.2 µF capacitor. The component is available in an SO-8 package and supports ±2% output voltage accuracy at 25 °C.

Feature Summary

• Integrated inhibit function for power management control
• Very low dropout voltage enabling efficient operation near input limits
• Low quiescent current consumption suitable for battery-powered systems
• Internal current and thermal limiting protection mechanisms

Applications

• Low-noise power supplies for sensitive analog circuits
• Battery-powered portable electronic devices
• Low-power embedded system regulation
• General-purpose linear voltage regulation in industrial environments

Procurement Notes

Verify the specific suffix 'CD' indicates the ±2% accuracy grade and SO-8 package configuration. Confirm the 'TR' designation corresponds to tape-and-reel packaging if reel procurement is required. Ensure the design accounts for the 18 V maximum input voltage limit and the -40 °C to +125 °C operating temperature range. Cross-reference the RoHS compliance status with the latest manufacturer documentation before finalizing orders.

Selection Notes

Select this component when a fixed 3 V output is required with minimal dropout characteristics. The inhibit pin allows for external shutdown control, reducing standby power consumption. Consider the 100 mA current limit for load requirements. The SO-8 package is suitable for surface-mount assembly. Verify that the 2.2 µF minimum output capacitance requirement fits within the board space constraints.

Part Context

This part belongs to the LExx family of very low-dropout regulators from STMicroelectronics. The family includes various output voltages and packages such as TO-92. The LE30CD-TR specifically denotes the 3 V output variant with standard accuracy and surface-mount packaging. It is designed for applications requiring stable regulation with low power overhead.

Replacement Considerations

Check for direct substitutes within the LExx series offering different output voltages or accuracy grades. Verify compatibility with existing PCB footprints if replacing with other SO-8 LDOs. Ensure any replacement maintains the inhibit functionality and similar electrical characteristics.